Cnidarians

Producer: CLEARVUE / eav

A comprehensive and up-to-date treatment of the phylum Cnidaria (coelenterata), this program discusses the two basic body forms of cnidarians, polyps and jellyfish (medusas), after which it presents three classes of cnidarians. Students see the structure of a hydra, how gastrodermal cells digest food, and how stinging cells and nerve cells work. The segment on jellyfish includes an excellent animated life cycle and demonstrates how sense organs work. Finally, students discover how anemones eat, and learn about two principal types of corals: soft corals and stoney reef-builders.

Details:

Format: VHS NTSC, PAL
Running time: 27 mins.
Price: US$75.00 (NTSC); for PAL standard, price on application